GeezerVison is showing github.com — posixmodule "undeclared function" error when compiling with sanitizer options on Termux (Android) · Issue #140317 · python/cpython
posixmodule "undeclared function" error when compiling with sanitizer options on Termux (Android) #140317DescriptionPython fails to compile when compiling with the sanitizer option.
Python/fileutils.c:458:1: warning: unused function 'decode_current_locale' [-Wunused-function] 458 | decode_current_locale(const char* arg... | ^~~~~~~~~~~~~~~~~~~~~
Python/fileutils.c:677:1: warning: unused function 'encode_current_locale' [-Wunused-function] 677 | encode_current_locale(const wchar_t *t... | ^~~~~~~~~~~~~~~~~~~~~ 2 warnings generated.
./Modules/posixmodule.c:10400:15: error: call to undeclared function 'wait3'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 10400 | pid = wait3(&status, options, &ru); | ^ 1 error generated. make: ***
[Makefile:3808: Modules/posixmodule.o] Error 1 make: *** Waiting for unfinished jobs...
clang option use.
aarch64-linux-android-clang -fsanitize=address -fsanitize=undefined
aarch64-linux-android-clang++ -fsanitize=address -fsanitize=undefined -fno-sanitize=vptr
aarch64-linux-android-clang --version
clang version 21.1.3
Target: aarch64-unknown-linux-android24
Thread model: posix
InstalledDir: /data/data/com.termux/files/usr/bin
.git revision is at bedaea05987738c4c6b958d19cec9621bec09f07
Compiling with no sanitizer option works. ActivityStanFromIreland commented on Oct 19, 2025 mhsmith commented on Oct 19, 2025 Please post:
- All the commands you ran to do the configure and make, including how you set the sanitizer options.
- The full output from configure and make.
- Are you building this on Termux, or are you building it on a different platform for Termux, in which case which one?
changed the title [-]posixmodule error when compiling with sanitizer options[/-] [+]posixmodule "undeclared function" error when compiling with sanitizer options on Termux (Android)[/+] on Oct 19, 2025theothernighttheotherday commented on Oct 19, 2025 hi,
@mhsmith i am compiling this on termux. below is the output of the configure script.
For python 3.14 branch, it also fail to build at the posixmodule when the sanitizer options are enable.
i follow the guide https://devguide.python.org/development-tools/clang/ for the sanitizer options.
output below.
*** configure-script
export CC="aarch64-linux-android-clang -fsanitize=address -fsanitize=undefined"
export CXX="aarch64-linux-android-clang++ -fsanitize=address -fsanitize=undefined -fno-sanitize=vptr"
export AR=llvm-ar
export RANLIB=llvm-ranlib
export AS=llvm-as export LD=ld.lld
export NM=llvm-nm
export OBJCOPY=llvm-objcopy export OBJDUMP=llvm-objdump
export STRIP=llvm-strip ./configure --prefix=$HOME/o/python315 \
--with-pydebug \
--with-remote-debug=no
output of configure
checking for git... found
checking build system type... aarch64-unknown-linux-android checking host system type... aarch64-unknown-linux-android
checking for Python interpreter freezing... ./_bootstrap_python checking for python3.15... python3.15
checking Python for regen version... Python 3.15.0a1+ checking for pkg-config... /data/data/com.termux/files/usr/bin/pkg-config checking pkg-config is at least version 0.9.0... yes
checking MACHDEP... "linux"
checking for --enable-universalsdk... no
checking for --with-universal-archs... no checking for --with-app-store-compliance... not patching for app store compliance
checking for gcc... aarch64-linux-android-clang -fsanitize=address -fsanitize=undefined
checking whether the C compiler works... yes
checking for C compiler default output file name... a.out
checking for suffix of executables...
checking whether we are cross compiling... no
checking for suffix of object files... o
checking whether the compiler supports GNU C... yes
checking whether aarch64-linux-android-clang -fsanitize=address -fsanitize=undefined accepts -g... yes
checking for aarch64-linux-android-clang -fsanitize=address -fsanitize=undefined option to enable C11 features... none needed
checking how to run the C preprocessor... aarch64-linux-android-clang -fsanitize=address -fsanitize=undefined -E
checking for grep that handles long lines and -e... /data/data/com.termux/files/usr/bin/grep
checking for a sed that does not truncate output... /data/data/com.termux/files/usr/bin/sed
checking for egrep... /data/data/com.termux/files/usr/bin/grep -E
checking for CC compiler name... clang
checking for stdio.h... yes
checking for stdlib.h... yes
checking for string.h... yes
checking for inttypes.h... yes
checking for stdint.h... yes
checking for strings.h... yes
checking for sys/stat.h... yes
checking for sys/types.h... yes
checking for unistd.h... yes
checking for wchar.h... yes
checking for minix/config.h... no
checking whether it is safe to define __EXTENSIONS__... yes
checking whether _XOPEN_SOURCE should be defined... no
checking for GCC compatible compiler... yes
checking for the platform triplet based on compiler characteristics... aarch64-linux-android
checking for multiarch... aarch64-linux-android
checking for PEP 11 support tier... aarch64-unknown-linux-android/clang has tier 3 (partially supported)
checking for -Wl,--no-as-needed... yes
checking for the Android API level... 24
checking for the Android arm ABI... 8
checking for --enable-wasm-dynamic-linking... missing
checking for --enable-wasm-pthreads... missing
checking for --with-suffix...
checking for case-insensitive build directory... no
checking LIBRARY... libpython$(VERSION)$(ABIFLAGS).a
checking LINKCC... $(PURIFY) $(CC)
checking EXPORTSYMS...
checking for GNU ld... yes
checking for --enable-shared... no
checking for --with-static-libpython... yes
checking for --enable-profiling... no
checking LDLIBRARY... libpython$(VERSION)$(ABIFLAGS).a
checking HOSTRUNNER...
checking for a BSD-compatible install... /data/data/com.termux/files/usr/bin/install -c
checking for a race-free mkdir -p... /data/data/com.termux/files/usr/bin/mkdir -p
checking for --disable-gil... no
checking for --with-pydebug... yes
checking for --with-trace-refs... no
checking for --enable-pystats... no
checking for --with-assertions... implied by --with-pydebug
checking for --enable-optimizations... no
checking PROFILE_TASK... -m test --pgo --timeout=$(TESTTIMEOUT)
checking for --with-lto... no
checking for llvm-profdata... /data/data/com.termux/files/usr/bin/llvm-profdata
checking for --enable-bolt... no
checking BOLT_COMMON_FLAGS... checking BOLT_INSTRUMENT_FLAGS... -update-debug-sections -skip-funcs=_PyEval_EvalFrameDefault,sre_ucs1_match/1,sre_ucs2_match/1,sre_ucs4_match/1
checking BOLT_APPLY_FLAGS... -update-debug-sections -skip-funcs=_PyEval_EvalFrameDefault,sre_ucs1_match/1,sre_ucs2_match/1,sre_ucs4_match/1 -reorder-blocks=ext-tsp -reorder-functions=cdsort -split-functions -icf=1 -inline-all -split-eh -reorder-functions-use-hot-size -peepholes=none -jump-tables=aggressive -inline-ap -indirect-call-promotion=all -dyno-stats -use-gnu-stack -frame-opt=hot
checking if aarch64-linux-android-clang -fsanitize=address -fsanitize=undefined supports -fstrict-overflow and -fno-strict-overflow... yes
checking for --with-strict-overflow... no
checking if aarch64-linux-android-clang -fsanitize=address -fsanitize=undefined supports -Og optimization level... yes
checking for --enable-safety... no
checking for --enable-slower-safety... no
checking if we can add -Wextra... yes
checking whether aarch64-linux-android-clang -fsanitize=address -fsanitize=undefined -fno-strict-aliasing accepts and needs -fno-strict-aliasing... no
checking if we can disable aarch64-linux-android-clang -fsanitize=address -fsanitize=undefined unused-parameter warning... yes
checking if we can disable aarch64-linux-android-clang -fsanitize=address -fsanitize=undefined int-conversion warning... yes
checking if we can disable aarch64-linux-android-clang -fsanitize=address -fsanitize=undefined missing-field-initializers warning... yes
checking if we can enable aarch64-linux-android-clang -fsanitize=address -fsanitize=undefined sign-compare warning... yes
checking if we can enable aarch64-linux-android-clang -fsanitize=address -fsanitize=undefined unreachable-code warning... yes
checking if we can enable aarch64-linux-android-clang -fsanitize=address -fsanitize=undefined strict-prototypes warning... yes
checking if we can make implicit function declaration an error in aarch64-linux-android-clang -fsanitize=address -fsanitize=undefined -Werror=implicit-function-declaration... yes
checking if we can use visibility in aarch64-linux-android-clang -fsanitize=address -fsanitize=undefined -fvisibility=hidden... yes
checking for --enable-experimental-jit...
checking whether pthreads are available without options... yes
checking whether aarch64-linux-android-clang++ -fsanitize=address -fsanitize=undefined -fno-sanitize=vptr also accepts flags for thread support... no
checking for alloca.h... yes
checking for asm/types.h... yes
checking for bluetooth.h... no
checking for conio.h... no
checking for direct.h... no
checking for dlfcn.h... yes
checking for endian.h... yes
checking for errno.h... yes
checking for fcntl.h... yes
checking for grp.h... yes
checking for io.h... no
checking for langinfo.h... yes
checking for libintl.h... yes
checking for libutil.h... no
checking for linux/auxvec.h... yes
checking for sys/auxv.h... yes
checking for linux/fs.h... yes
checking for linux/limits.h... yes
checking for linux/memfd.h... yes
checking for linux/netfilter_ipv4.h... yes
checking for linux/random.h... yes
checking for linux/soundcard.h... yes
checking for linux/sched.h... yes
checking for linux/tipc.h... yes
checking for linux/wait.h... yes
checking for netdb.h... yes
checking for net/ethernet.h... yes
checking for netinet/in.h... yes
checking for netpacket/packet.h... yes
checking for poll.h... yes
checking for process.h... no
checking for pthread.h... yes
checking for pty.h... yes
checking for sched.h... yes
checking for setjmp.h... yes
checking for shadow.h... no
checking for signal.h... yes
checking for spawn.h... yes
checking for stropts.h... no
checking for sys/audioio.h... no
checking for sys/bsdtty.h... no
checking for sys/devpoll.h... no
checking for sys/endian.h... yes
checking for sys/epoll.h... yes
checking for sys/event.h... no
checking for sys/eventfd.h... yes
checking for sys/file.h... yes
checking for sys/ioctl.h... yes
checking for sys/kern_control.h... no
checking for sys/loadavg.h... no
checking for sys/lock.h... no
checking for sys/memfd.h... no
checking for sys/mkdev.h... no
checking for sys/mman.h... yes
checking for sys/modem.h... no
checking for sys/param.h... yes
checking for sys/pidfd.h... yes
checking for sys/poll.h... yes
checking for sys/random.h... yes
checking for sys/resource.h... yes
checking for sys/select.h... yes
checking for sys/sendfile.h... yes
checking for sys/socket.h... yes
checking for sys/soundcard.h... no
checking for sys/stat.h... (cached) yes
checking for sys/statvfs.h... yes
checking for sys/sys_domain.h... no
checking for sys/syscall.h... yes
checking for sys/sysmacros.h... yes
checking for sys/termio.h... no
checking for sys/time.h... yes
checking for sys/times.h... yes
checking for sys/timerfd.h... yes
checking for sys/types.h... (cached) yes
checking for sys/uio.h... yes
checking for sys/un.h... yes
checking for sys/utsname.h... yes
checking for sys/wait.h... yes
checking for sys/xattr.h... yes
checking for sysexits.h... yes
checking for syslog.h... yes
checking for termios.h... yes
checking for util.h... no
checking for utime.h... yes
checking for utmp.h... yes
checking for dirent.h that defines DIR... yes
checking for library containing opendir... none required
checking for sys/mkdev.h... (cached) no
checking for sys/sysmacros.h... (cached) yes
checking for bluetooth/bluetooth.h... no
checking for net/if.h... yes
checking for linux/netlink.h... yes
checking for netlink/netlink.h... no
checking for linux/qrtr.h... yes
checking for linux/vm_sockets.h... yes
checking for linux/can.h... yes
checking for linux/can/bcm.h... yes
checking for linux/can/isotp.h... yes
checking for linux/can/j1939.h... yes
checking for linux/can/raw.h... yes
checking for netcan/can.h... no
checking for clock_t... yes
checking for makedev... yes
checking for le64toh... yes
checking for mode_t... yes
checking for off_t... yes
checking for pid_t... yes
checking for size_t... yes
checking for uid_t... yes
checking for gid_t... yes
checking for ssize_t... yes
checking for __uint128_t... yes
checking size of int... 4
checking size of long... 8
checking alignment of long... 8
checking size of long long... 8
checking size of void *... 8
checking size of short... 2
checking size of float... 4
checking size of double... 8
checking size of fpos_t... 8
checking size of size_t... 8
checking alignment of size_t... 8
checking size of pid_t... 4
checking size of uintptr_t... 8
checking alignment of max_align_t... 16
checking for long double... yes
checking size of long double... 16
checking size of _Bool... 1
checking size of off_t... 8
checking whether to enable large file support... no
checking size of time_t... 8
checking for pthread_t... yes
checking size of pthread_t... 8
checking size of pthread_key_t... 4
checking whether pthread_key_t is compatible with int... yes
checking for --enable-framework... no
checking for --with-dsymutil... no
checking for dyld... no
checking for --with-address-sanitizer... no
checking for --with-memory-sanitizer... no
checking for --with-undefined-behavior-sanitizer... no
checking for --with-thread-sanitizer... no
checking the extension of shared libraries... .so
checking LDSHARED... $(CC) -shared
checking BLDSHARED flags... $(CC) -shared
checking CCSHARED... -fPIC
checking LINKFORSHARED... -Xlinker -export-dynamic
checking CFLAGSFORSHARED...
checking SHLIBS... $(LIBS)
checking perf trampoline... no
checking for sendfile in -lsendfile... no
checking for dlopen in -ldl... yes
checking for shl_load in -ldld... no
checking for execinfo.h... yes
checking for backtrace... no
checking for dladdr1... no
checking for link.h... yes
checking for backtrace... (cached) no
checking for dladdr1... (cached) no
checking for dlfcn.h... (cached) yes
checking for backtrace... (cached) no
checking for dladdr1... (cached) no
checking for uuid.h... no
checking for uuid >= 2.20... yes
checking for library containing sem_init... none required
checking for textdomain in -lintl... no
checking aligned memory access is required... no
checking for --with-hash-algorithm... default
checking for --with-tzpath... "/usr/share/zoneinfo:/usr/lib/zoneinfo:/usr/share/lib/zoneinfo:/etc/zoneinfo"
checking for t_open in -lnsl... no
checking for socket in -lsocket... no
checking for --with-libs... no
checking for --with-system-expat... no
checking for libffi... yes
checking for ffi_prep_cif_var... yes
checking for ffi_prep_closure_loc... yes
checking for ffi_closure_alloc... yes
checking libffi has complex type support... yes
checking for --with-system-libmpdec... yes
checking for libmpdec >= 2.5.0... no
checking for --with-decimal-contextvar... yes
checking for sqlite3 >= 3.15.2... yes
checking for sqlite3.h... yes
checking for sqlite3_bind_double in -lsqlite3... yes
checking for sqlite3_column_decltype in -lsqlite3... yes
checking for sqlite3_column_double in -lsqlite3... yes
checking for sqlite3_complete in -lsqlite3... yes
checking for sqlite3_progress_handler in -lsqlite3... yes
checking for sqlite3_result_double in -lsqlite3... yes
checking for sqlite3_set_authorizer in -lsqlite3... yes
checking for sqlite3_trace_v2 in -lsqlite3... yes
checking for sqlite3_value_double in -lsqlite3... yes
checking for sqlite3_load_extension in -lsqlite3... yes
checking for sqlite3_serialize in -lsqlite3... yes
checking for --enable-loadable-sqlite-extensions... no
checking for gdbm.h... yes
checking for gdbm_open in -lgdbm... yes
checking for ndbm.h... yes
checking for library containing dbm_open... -lgdbm_compat
checking for ndbm presence and linker args... yes (-lgdbm_compat)
checking for gdbm/ndbm.h... no
checking for gdbm-ndbm.h... no
checking for db.h... yes
checking for libdb... no
checking for --with-dbmliborder... gdbm:ndbm:bdb
checking for _dbm module CFLAGS and LIBS... -DUSE_NDBM -lgdbm_compat
checking if PTHREAD_SCOPE_SYSTEM is supported... yes
checking for pthread_sigmask... yes
checking for pthread_getcpuclockid... yes
checking if --enable-ipv6 is specified... yes
checking if RFC2553 API is available... yes
checking for IPV6_INRIA_VERSION defined in netinet/in.h... no
checking for __KAME__ defined in netinet/in.h... no
checking for __GLIBC__ defined in features.h... no
checking for _TOSHIBA_INET6 defined in sys/param.h... no
checking for __V6D__ defined in /usr/local/v6/include/sys/v6config.h... no
checking for _ZETA_MINAMI_INET6 defined in sys/param.h... no
checking ipv6 stack type... unknown
checking CAN_RAW_FD_FRAMES... yes
checking for CAN_RAW_JOIN_FILTERS... yes
checking for --with-doc-strings... yes
checking for stdatomic.h... yes
checking for builtin __atomic_load_n and __atomic_store_n functions... yes
checking for --with-mimalloc... yes
checking for --with-pymalloc... yes
checking for --with-c-locale-coercion... yes
checking for --with-valgrind... no
checking for --with-dtrace... no
checking for dlopen... yes
checking DYNLOADFILE... dynload_shlib.o
checking MACHDEP_OBJS... none
checking for accept4... yes
checking for alarm... yes
checking for bind_textdomain_codeset... no
checking for chmod... yes
checking for chown... yes
checking for clearenv... yes
checking for clock... yes
checking for closefrom... no
checking for close_range... no
checking for confstr... no
checking for copy_file_range... no
checking for ctermid... yes
checking for dladdr... yes
checking for dup... yes
checking for dup3... yes
checking for execv... yes
checking for explicit_bzero... no
checking for explicit_memset... no
checking for faccessat... yes
checking for fchmod... yes
checking for fchmodat... yes
checking for fchown... yes
checking for fchownat... yes
checking for fdopendir... yes
checking for fdwalk... no
checking for fexecve... no
checking for fork... yes
checking for fork1... no
checking for fpathconf... yes
checking for fstatat... yes
checking for ftime... yes
checking for ftruncate... yes
checking for futimens... yes
checking for futimes... no
checking for futimesat... no
checking for gai_strerror... yes
checking for getegid... yes
checking for geteuid... yes
checking for getgid... yes
checking for getgrent... no
checking for getgrgid... yes
checking for getgrgid_r... yes
checking for getgrnam_r... yes
checking for getgrouplist... yes
checking for gethostname... yes
checking for getitimer... yes
checking for getloadavg... no
checking for getlogin... yes
checking for getlogin_r... no
checking for getpeername... yes
checking for getpgid... yes
checking for getpid... yes
checking for getppid... yes
checking for getpriority... yes
checking for _getpty... no
checking for getpwent... no
checking for getpwnam_r... yes
checking for getpwuid... yes
checking for getpwuid_r... yes
checking for getresgid... yes
checking for getresuid... yes
checking for getrusage... yes
checking for getsid... yes
checking for getspent... no
checking for getspnam... no
checking for getuid... yes
checking for getwd... no
checking for grantpt... yes
checking for if_nameindex... yes
checking for initgroups... yes
checking for kill... yes
checking for killpg... yes
checking for lchown... yes
checking for linkat... yes
checking for lockf... yes
checking for lstat... yes
checking for lutimes... no
checking for madvise... yes
checking for mbrtowc... yes
checking for memrchr... yes
checking for mkdirat... yes
checking for mkfifo... yes
checking for mkfifoat... yes
checking for mknod... yes
checking for mknodat... yes
checking for mktime... yes
checking for mmap... yes
checking for mremap... yes
checking for nice... yes
checking for openat... yes
checking for opendir... yes
checking for pathconf... yes
checking for pause... yes
checking for pipe... yes
checking for pipe2... yes
checking for plock... no
checking for poll... yes
checking for posix_fadvise... yes
checking for posix_fallocate... yes
checking for posix_openpt... yes
checking for posix_spawn... yes
checking for posix_spawnp... yes
checking for posix_spawn_file_actions_addclosefrom_np... no
checking for pread... yes
checking for preadv... yes
checking for preadv2... no
checking for process_vm_readv... yes
checking for pthread_cond_timedwait_relative_np... no
checking for pthread_condattr_setclock... yes
checking for pthread_init... no
checking for pthread_kill... yes
checking for pthread_get_name_np... no
checking for pthread_getname_np... no
checking for pthread_set_name_np... no
checking for pthread_setname_np... yes
checking for pthread_getattr_np... yes
checking for ptsname... yes
checking for ptsname_r... yes
checking for pwrite... yes
checking for pwritev... yes
checking for pwritev2... no
checking for readlink... yes
checking for readlinkat... yes
checking for readv... yes
checking for realpath... yes
checking for renameat... yes
checking for rtpSpawn... no
checking for sched_get_priority_max... yes
checking for sched_rr_get_interval... yes
checking for sched_setaffinity... yes
checking for sched_setparam... yes
checking for sched_setscheduler... yes
checking for sem_clockwait... no
checking for sem_getvalue... yes
checking for sem_open... yes
checking for sem_timedwait... yes
checking for sem_unlink... yes
checking for sendfile... yes
checking for setegid... yes
checking for seteuid... yes
checking for setgid... yes
checking for sethostname... yes
checking for setitimer... yes
checking for setlocale... yes
checking for setpgid... yes
checking for setpgrp... yes
checking for setpriority... yes
checking for setregid... yes
checking for setresgid... yes
checking for setresuid... yes
checking for setreuid... yes
checking for setsid... yes
checking for setuid... yes
checking for setvbuf... yes
checking for shutdown... yes
checking for sigaction... yes
checking for sigaltstack... yes
checking for sigfillset... yes
checking for siginterrupt... yes
checking for sigpending... yes
checking for sigrelse... no
checking for sigtimedwait... yes
checking for sigwait... yes
checking for sigwaitinfo... yes
checking for snprintf... yes
checking for splice... yes
checking for strftime... yes
checking for strlcpy... yes
checking for strsignal... yes
checking for symlinkat... yes
checking for sync... yes
checking for sysconf... yes
checking for tcgetpgrp... yes
checking for tcsetpgrp... yes
checking for tempnam... yes
checking for timegm... yes
checking for times... yes
checking for tmpfile... yes
checking for tmpnam... yes
checking for tmpnam_r... no
checking for truncate... yes
checking for ttyname_r... yes
checking for umask... yes
checking for uname... yes
checking for unlinkat... yes
checking for unlockpt... yes
checking for utimensat... yes
checking for utimes... yes
checking for vfork... yes
checking for wait... yes
checking for wait3... yes
checking for wait4... yes
checking for waitid... yes
checking for waitpid... yes
checking for wcscoll... yes
checking for wcsftime... yes
checking for wcsxfrm... yes
checking for wmemcmp... yes
checking for writev... yes
checking for statx... no
checking for getentropy... no
checking for getgroups... yes
checking for system... yes
checking for aarch64-linux-android-clang -fsanitize=address -fsanitize=undefined options needed to detect all undeclared functions... none needed
checking whether dirfd is declared... yes
checking for chroot... yes
checking for link... yes
checking for symlink... yes
checking for fchdir... yes
checking for fsync... yes
checking for fdatasync... yes
checking for epoll_create... yes
checking for epoll_create1... yes
checking for kqueue... no
checking for prlimit... yes
checking for _dyld_shared_cache_contains_path... no
checking for memfd_create... no
checking for eventfd... yes
checking for timerfd_create... yes
checking for ctermid_r... no
checking for flock declaration... yes
checking for flock... yes
checking for getpagesize... yes
checking for broken unsetenv... no
checking for true... true
checking for inet_aton in -lc... yes
checking for hstrerror in -lc... yes
checking for chflags... no
checking for lchflags... no
checking for zlib >= 1.2.2.1... yes
checking for bzip2... no
checking for bzlib.h... yes
checking for BZ2_bzCompress in -lbz2... yes
checking for liblzma... yes
checking for libzstd >= 1.4.5... yes
checking for hstrerror... yes
checking for getservbyname... yes
checking for getservbyport... yes
checking for gethostbyname... yes
checking for gethostbyaddr... yes
checking for getprotobyname... yes
checking for inet_aton... yes
checking for inet_ntoa... yes
checking for inet_pton... yes
checking for getpeername... (cached) yes
checking for getsockname... yes
checking for accept... yes
checking for bind... yes
checking for connect... yes
checking for listen... yes
checking for recvfrom... yes
checking for sendto... yes
checking for setsockopt... yes
checking for socket... yes
checking for setgroups... yes
checking whether MAXLOGNAME is declared... no
checking whether UT_NAMESIZE is declared... yes
checking for openpty... yes
checking for library containing login_tty... none required
checking for forkpty... yes
checking for fseek64... no
checking for fseeko... yes
checking for fstatvfs... yes
checking for ftell64... no
checking for ftello... yes
checking for statvfs... yes
checking for dup2... yes
checking for getpgrp... yes
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checking digit size for Python's longs... no value specified
checking for wchar.h... (cached) yes
checking size of wchar_t... 4
checking whether wchar_t is signed... no
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checking ABIFLAGS... d
checking SOABI... cpython-315d-aarch64-linux-android
checking LDVERSION... $(VERSION)$(ABIFLAGS)
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configure: checking for device files
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configure: creating ./config.status
config.status: creating Makefile.pre
config.status: creating Misc/python.pc
config.status: creating Misc/python-embed.pc
config.status: creating Misc/python-config.sh
config.status: creating Modules/Setup.bootstrap
config.status: creating Modules/Setup.stdlib
config.status: creating Modules/ld_so_aix
config.status: creating pyconfig.h
configure: creating Modules/Setup.local
configure: creating Makefile
*** output of make file
make -s -j 8
Python/fileutils.c:458:1: warning: unused function
'decode_current_locale'
[-Wunused-function]
458 | decode_current_locale(const char... | ^~~~~~~~~~~~~~~~~~~~~
Python/fileutils.c:677:1: warning: unused function
'encode_current_locale' [-Wunused-function]
677 | encode_current_locale(const wcha...
| ^~~~~~~~~~~~~~~~~~~~~ 2 warnings generated.
./Modules/posixmodule.c:10400:15: error:
call to undeclared function
'wait3'; ISO C99 and later do not
support implicit function
declarations
[-Wimplicit-function-declaration]
10400 | pid = wait3(&status, opt...
| ^
1 error generated.
make: *** [Makefile:3808: Modules/posixmodule.o] Error 1
make: *** Waiting for unfinished jobs....
StanFromIreland commented on Oct 19, 2025 Please use triple backticks for codeblocks, I edited your post with them, I also hid the long output in a details block so that this discussion is easier to navigate. Reacted by Badli Al Rashid Reacted by Badli Al Rashid theothernighttheotherday commented on Oct 19, 2025
Please use triple backticks for codeblocks, I edited your post with them, I also hid the long output in a details block so that this discussion is easier to navigate.
okey thanks! mhsmith commented on Oct 21, 2025 The configure log shows that it thinks wait3 is available, but it isn't in the NDK headers as of version 27.3.13750724. It isn't in the Termux headers either as of ndk-sysroot version 28c. However, wait4 is included in both places.
configure usually detects functions by trying to link against them, regardless of whether they're in a header. So my guess is that the libc on your device actually contains a wait3 symbol. That doesn't appear to be the case on my Pixel 7:
.../usr/lib $ nm /system/lib64/libc.so | grep wait3
.../usr/lib $ nm /system/lib64/libc.so | grep wait4
00000000000dea40 T wait4
What do you get from those two commands, and what device are you running on? theothernighttheotherday commented on Oct 21, 2025 i got the following
here is the output of nm. only wait4 function have.
nm /system/lib64/libc.so | grep wait3
nm /system/lib64/libc.so | grep wait4
00000000000ea2b0 T wait4
mhsmith commented on Oct 21, 2025 And what device are you running this on? theothernighttheotherday commented on Oct 21, 2025 it is a Xiaomi mobile phone. mhsmith commented on Oct 22, 2025 They make thousands of models. Which one specifically, and which version of Android?
I don't have a full Python development environment set up on my Pixel 7, but I tried this test program which is similar to what the configure script would do:
char wait3(void);
int main(void) {
return wait3();
;
return 0;
}
~ $ clang -o conftest conftest.c
ld.lld: error: undefined symbol: wait3
>>> referenced by conftest.c
>>> /data/data/com.termux/files/usr/tmp/conftest-71af60.o:(main)
>>> did you mean: wait4
>>> defined in: /system/lib64/libc.so
What happens if you try the same?
One possible workaround is to add wait3 to the blocked_funcs list in configure.ac. Then regenerate configure with autoreconf as shown here, and rerun configure and make.
You may need to do the same with other symbols, in which case, please let me know which ones they are. theothernighttheotherday commented on Oct 22, 2025 hi,
It's a Xiaomi Redmi Note 12 5g but in termux-info its
Device manufacturer:
Xiaomi
Device model:
22111317G
is under the if if test "$ac_sys_system" = "Linux-android"; then section ? see the attach screenshot.
i got the following when i run the wait3 conftest
clang -o conftest conftest.c
ld.lld: error: undefined symbol: wait3
>>> referenced by conftest.c
>>> /data/data/com.termux/files/usr/tmp/conftest-153e82.o:(main)
>>> did you mean: wait4
>>> defined in: /data/data/com.termux/files/usr/bin/../../usr/aarch64-linux-android/lib/libc.so
clang: error: linker command failed with exit code 1 (use -v to see invocation)
for wait4 conf test the output as shown below.
clang -o conftest conftest.c
mhsmith commented on Oct 22, 2025 OK, then I don't know why the configure script thinks wait3 is available, but yes, the section in the screenshot is where you could disable it.
And by the way, there's no need to quote entire comments when you're replying in the very next comment, that just wastes space on the page. VectorASD commented on Oct 24, 2025 theothernighttheotherday commented on Oct 25, 2025 Thank you @VectorASD for the information.
The ./configure --enable-optimizations and --with-lto=full works well with python3.12.12 in termux.
but the --with-address-sanitizer, --with-memory-sanitizer and --with-undefined-behavior-sanitizer seems to be not woeking as expected reason being unsupported.
the guide is at https://devguide.python.org/development-tools/clang/ is a good starting point. mhsmith commented on Oct 25, 2025 @VectorASD: Your post has nothing to do with this issue. Please don't waste everybody's time with AI-generated essays. manueljacob commented on Apr 7, 2026 @theothernighttheotherday
i got the following when i run the wait3 conftest
clang -o conftest conftest.c
ld.lld: error: undefined symbol: wait3
>>> referenced by conftest.c
>>> /data/data/com.termux/files/usr/tmp/conftest-153e82.o:(main)
>>> did you mean: wait4
>>> defined in: /data/data/com.termux/files/usr/bin/../../usr/aarch64-linux-android/lib/libc.so
clang: error: linker command failed with exit code 1 (use -v to see invocation)
It would be interesting to do this with the real conftest.c generated by configure. E.g. you could add exit 1 after
|
ac_fn_c_check_func "$LINENO" "wait3" "ac_cv_func_wait3" |
, which should leave conftest.c in the current directory.
Then you could try running clang -o conftest conftest.c to see whether it behaves as with the conftest.c you created manually. If you pass -E to clang, it outputs the preprocessed file, which could give some hints in which header wait3 is defined (I assume it is because the configure script seems to be able to compile conftest.c).
One possibility is that conftest.c includes some header defining wait3 as function calling wait4 with -1 as the first argument, which is not included by Modules/posixmodule.c (although I can’t think of a reason why that should be the case).
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